Santorini Weather Guide by Season | Santorini Luxury Roses

Santorini Luxury Roses | Travel Guide

Santorini Weather Guide by Season

Everything you need to know about Santorini's climate, month by month, so you can plan the perfect moment for your visit.

☀️
2,915
Sunshine Hours per Year
🌡️
14–30°C
Average Temperature Range
🌊
22–24.5°C
Sea Temp (Peak)
🌸
Apr–Oct
Main Visitor Season

Santorini sits in the southern Aegean, close enough to North Africa to be one of the warmest spots in Greece, yet cooled through summer by the famous Meltemi winds that sweep down from the north. The result is a climate that is almost never harsh: dry, luminous summers, mild winters with occasional rain, and two shoulder seasons that locals consider the island's best-kept secret.

Whether you are planning a wedding proposal on the caldera edge, a honeymoon getaway, or simply want to know when the roses bloom and the sunsets burn longest, this guide gives you every number and every nuance you need.

Santorini Temperatures by Month

Monthly average highs and lows across the full calendar year.

14°
10°
Jan
14°
10°
Feb
16°
11°
Mar
19°
13°
Apr
23°
17°
May
28°
21°
Jun
30°
24°
Jul
30°
24°
Aug
27°
21°
Sep
23°
18°
Oct
19°
15°
Nov
16°
12°
Dec

← swipe to see all months →

Average High Temperature
Average Low Temperature

Santorini Rainfall by Month

Santorini is exceptionally dry from June through August, with virtually zero rainfall during peak summer. The wet season runs from November to March, though storms are short-lived.

115mm
Jan
80mm
Feb
65mm
Mar
30mm
Apr
15mm
May
5mm
Jun
1mm
Jul
1mm
Aug
15mm
Sep
60mm
Oct
70mm
Nov
100mm
Dec

← swipe to see all months →

Average monthly rainfall in millimetres (mm)

Complete Monthly Weather Data

A full overview of Santorini's climate conditions month by month, including air temperature, sea temperature, sunshine hours, rainfall, and rainy days.

Month High (°C) Low (°C) Sea (°C) Rain (mm) Sun (hrs/day) Rain Days
January 14°C10°C16.5°C115mm4 9
February 14°C10°C15.5°C80mm 5 7
March 16°C11°C15.5°C65mm 6.56
April 19°C13°C16.5°C30mm 8.53
May 23°C17°C18.5°C15mm 9.52
June 28°C21°C22°C 5mm 11 1
July 30°C24°C23.5°C1mm 12 0
August 30°C24°C24.5°C1mm 11.50
September27°C21°C24°C 15mm 9.51
October 23°C18°C22°C 60mm 7.53
November 19°C15°C19.5°C70mm 5.55
December 16°C12°C17.5°C100mm4 9

Santorini Weather by Season

Santorini has four distinct seasons, each with a different character. Here is what to expect throughout the year.

🌸
Spring
March • April • May
Wildflowers, Calm Seas & Open Roads
  • Daytime temperatures: 16°C to 23°C
  • Rainfall decreasing week by week
  • Sea warming from 15.5°C to 18.5°C
  • Up to 9.5 hours of sunshine daily by May
  • Dramatically fewer crowds than summer
  • Easter celebrations fill the villages with candlelight
Best months in spring: April and May offer the finest balance of pleasant warmth, open restaurants, and tranquil caldera views. This is one of the best moments for a romantic surprise in Santorini, when the island still feels intimate.
☀️
Summer
June • July • August
Peak Season & Long Sunsets
  • Daytime temperatures: 28°C to 30°C
  • Virtually zero rainfall throughout
  • Sea temperatures reach 23.5–24.5°C in July/August
  • 11 to 12 hours of sunshine per day at peak
  • The Meltemi wind keeps mornings fresh
  • Famous Oia sunsets at their most spectacular
Insider tip: July and August bring the crowds and the highest prices. If you are planning a Santorini honeymoon, book accommodation and experiences well in advance. June is often considered the sweeter spot, with nearly identical weather but more breathing room.
🍂
Autumn
September • October • November
Warm Seas, Golden Light & Quiet Lanes
  • Daytime temperatures: 19°C to 27°C
  • Sea remains warm well into October (22°C)
  • Light rains from late October onward
  • Grape harvest season and local festivals
  • Hotels and restaurants still open, prices falling
  • Softer, warmer light that photographers love
Local secret: September is arguably Santorini's finest month. The sea is at its warmest, the crowds have thinned, and the island takes a long slow breath. A perfect time for an anniversary celebration with a private dinner overlooking the caldera.
🌧️
Winter
December • January • February
Quiet, Honest & Surprisingly Beautiful
  • Daytime temperatures: 15°C to 16°C
  • Wettest months, with up to 9 rainy days
  • Sea cools to 16–17°C, not suitable for swimming
  • Much of the island goes into a quiet hibernation
  • Dramatic storm skies over the caldera
  • Rare snowfall possible, though not common
Worth knowing: Winter visitors find a stripped-back, genuine Santorini that few tourists ever see. Many hotels and restaurants close, but those that remain open often offer significant value. Not ideal for beach activities, but striking for photography and solitude.

Month-by-Month Guide

A quick reference for every month of the year, including practical travel context for each.

January
14°CHigh
10°CLow
🌊 Sea: 16.5°C 🌧️ Rain: 115mm • 9 days ☀️ 4 hrs sunshine/day The quietest month. Most establishments closed. Dramatic winter light over the caldera.
February
14°CHigh
10°CLow
🌊 Sea: 15.5°C 🌧️ Rain: 80mm • 7 days ☀️ 5 hrs sunshine/day Weather begins to stabilise. Very low prices. Occasional cold northerly winds.
March
16°CHigh
11°CLow
🌊 Sea: 15.5°C 🌧️ Rain: 65mm • 6 days ☀️ 6.5 hrs sunshine/day The island slowly wakes up. Wildflowers on the hillsides. A few restaurants begin reopening.
April
19°CHigh
13°CLow
🌊 Sea: 16.5°C 🌧️ Rain: 30mm • 3 days ☀️ 8.5 hrs sunshine/day One of the best months to visit. Comfortable temperatures, Easter festivities, low crowds.
May
23°CHigh
17°CLow
🌊 Sea: 18.5°C 🌧️ Rain: 15mm • 2 days ☀️ 9.5 hrs sunshine/day Excellent weather and manageable visitor numbers. Birthday celebrations here are magical in May.
June
28°CHigh
21°CLow
🌊 Sea: 22°C 🌧️ Rain: 5mm • 1 day ☀️ 11 hrs sunshine/day Early summer at its finest. Warm, dry, long evenings. Still slightly less packed than July.
July
30°CHigh
24°CLow
🌊 Sea: 23.5°C 🌧️ Rain: 1mm • 0 days ☀️ 12 hrs sunshine/day Peak season. The Meltemi wind is active and keeps the heat tolerable. Book everything early.
August
30°CHigh
24°CLow
🌊 Sea: 24.5°C 🌧️ Rain: 1mm • 0 days ☀️ 11.5 hrs sunshine/day Warmest sea of the year. Busiest and most expensive month. Sunsets over Oia are unforgettable.
September
27°CHigh
21°CLow
🌊 Sea: 24°C 🌧️ Rain: 15mm • 1 day ☀️ 9.5 hrs sunshine/day Many consider this the best month overall. Warm sea, golden light, quieter caldera paths.
October
23°CHigh
18°CLow
🌊 Sea: 22°C 🌧️ Rain: 60mm • 3 days ☀️ 7.5 hrs sunshine/day Still very pleasant. Sea swimmable. First autumn rains arrive, mostly short-lived showers.
November
19°CHigh
15°CLow
🌊 Sea: 19.5°C 🌧️ Rain: 70mm • 5 days ☀️ 5.5 hrs sunshine/day Season winds down. Many businesses close. Good for photography and off-the-beaten-path walks.
December
16°CHigh
12°CLow
🌊 Sea: 17.5°C 🌧️ Rain: 100mm • 9 days ☀️ 4 hrs sunshine/day Wettest month. The island is calm and stripped back. Christmas atmosphere in Fira is quietly charming.
Peak Season
Shoulder Season
Off Season

The Meltemi Wind: What Visitors Need to Know

No Santorini weather guide is complete without an honest account of the Meltemi. This is a dry, northerly wind that blows across the Aegean from roughly May through September, and it defines the character of a summer visit in ways that temperature data alone cannot capture.

At its gentlest, the Meltemi is a blessing. It keeps the July and August heat from becoming oppressive, cools the evenings, and makes outdoor dining comfortable long after sundown. The air feels clear and clean in a way that is hard to describe until you have sat on a terrace in Oia and watched the white buildings catch the late afternoon light.

At its strongest, usually in late July and August, the Meltemi can blow at 40 to 50 kilometres per hour for days at a time. Boat crossings between islands can be rough. Small umbrellas are useless. Anything not weighted down will migrate. This is worth knowing, especially if you are planning an outdoor event. Our team plans romantic experiences and floral arrangements around the island's microclimate conditions, which is one of the reasons everything we create is designed with the Santorini wind in mind.

When is the Best Time to Visit Santorini?

The ideal time depends entirely on what you are coming for. Here is our breakdown for different types of visitors.

🏖️
Beach & Swimming
Best: July, August, September
Sea temperatures peak at 24–25°C in August and remain very swimmable through all of September. The volcanic black and red sand beaches hold the heat beautifully throughout these months.
💍
Proposals & Romance
Best: May, June, September, October
The shoulder months give you warm evenings, stunning light, and fewer people competing for the same cliffside. A wedding proposal in Santorini feels most intimate when the island is not overrun.
🌙
Honeymoons
Best: June, September
Early June combines perfect weather with a calmer island. September offers the warmest sea and that soft autumnal golden hour that makes every photograph feel like a painting. Both are ideal for a Santorini honeymoon.
📸
Photography
Best: April, September, October
Shoulder season light is softer, the shadows are longer, and the caldera paths are not crowded with tripods. The spring wildflowers and autumn harvest colours add extra layers to the island's visual story.
💰
Budget Visitors
Best: March, April, October, November
Prices for accommodation and flights drop noticeably outside peak months. April and October both offer genuinely good weather with prices that can be 30–50% lower than July or August.
🎂
Special Occasions
Best: May through October
Whether it is a birthday in Santorini or an anniversary celebration, the whole summer and early autumn window offers reliable weather for any outdoor or rooftop event.

What It Actually Feels Like to Be Here

Numbers tell one story. The actual experience of Santorini's weather tells another. In April, the mornings still carry a coolness that makes you want a jacket for the first coffee of the day. By afternoon, the light has opened up and the cliffs above Fira are warm to the touch. The sea is still brisk but the beaches are yours.

By late June, something shifts. The days stretch so long they seem reluctant to end. The sun goes down around 8:30 in the evening and the sky stays lit for an hour after that. Sitting above the caldera in that hour, with the sea turning from blue to copper to deep violet, you understand why Santorini has become shorthand for a certain kind of romantic perfection. If you are planning a romantic surprise, this is the light you want to plan it in.

In October, the island exhales. The air is still warm enough for linen and the sea has not yet given up its summer warmth. Restaurants have their best tables free. The caldera path between Fira and Oia, which in August feels like a relay race between selfie sticks, is quiet enough that you can stop and look at the view in peace.

Even winter, for those willing to accept what it is, has something to offer. The volcanic landscape looks entirely different under grey skies. The few tavernas that stay open cook for the people who live there rather than for the people passing through. You can have a table overlooking the caldera with a bowl of fava and a carafe of Assyrtiko and feel, briefly, like a local.

Frequently Asked Questions About Santorini Weather

What is the hottest month in Santorini?
July and August are jointly the hottest months, with average highs reaching 30°C. Both months have virtually zero rainfall and 11 to 12 hours of sunshine per day. The Meltemi wind means that despite these temperatures, the heat is rarely oppressive during the day, though nights remain warm with lows around 24°C. Sea temperatures peak at 24.5°C in August.
Is Santorini worth visiting in October?
October is one of the most underrated months to visit Santorini. Average daytime temperatures sit around 23°C, the sea is still warm at 22°C, and you will enjoy around 7.5 hours of sunshine per day. Rainfall averages 60mm for the month but falls on only around 3 days, usually in short bursts. Prices are noticeably lower than peak summer.
Does it rain a lot in Santorini?
No. Santorini has one of the driest climates in the Aegean. From July through August, rainfall is essentially zero (around 1mm). The wet season runs from November to March, with January being the wettest month at around 115mm. December is close behind at 100mm. Even then, rain tends to fall in short, intense bursts rather than long grey days. The total annual rainfall across all 12 months is only around 555mm.
When is the best time to see the Santorini sunset?
The famous sunset over Oia is most spectacular from May through October, when the sun sets in the west over the open sea. In midsummer, this happens around 8:30 to 9pm. The colours are most intense in late September and October when the air is clearer and the sun sits lower. If you want to watch the sunset without competing for space, early June or late September are far more relaxed than peak August.
Can you swim in Santorini in May or October?
In May, sea temperatures reach around 18.5°C, which is acceptable for most swimmers and good for snorkelling, though still on the cool side for a long swim. In October, the sea is around 22°C, still very pleasant and warmer than the sea in most of northern Europe at any time of year. Both months are underappreciated for swimming precisely because the beaches are far less crowded.
What should I pack for Santorini in different seasons?
In summer, pack light cotton clothing, swimwear, a light layer for Meltemi evenings on terraces, and comfortable shoes for cobblestone paths. In spring and autumn, add a light jacket and one smarter layer for cooler evenings. In winter, pack as you would for a mild Mediterranean climate: waterproof layer, warmer mid-layers, and closed shoes. A lightweight scarf is always useful on the caldera, whatever the season.

Plan Your Perfect Santorini Moment

Whether you arrive in the wildflower days of spring or the golden evenings of late summer, we create experiences and arrangements that make the most of Santorini's extraordinary light and setting.